<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>欢迎注册</title>
    <link href="../css/register.css" rel="stylesheet">
</head>
<body>

<div class="form-div">
    <div class="reg-content">
        <h1>欢迎注册</h1>
        <span>已有帐号？</span> <a href="#">登录</a>
    </div>
    <form id="reg-form" action="#" method="get">

        <table>

            <tr>
                <td>用户名</td>
                <td class="inputs">
                    <input name="username" type="text" id="username">
                    <br>
                    <span id="username_err" class="err_msg" style="display: none">用户名不太受欢迎</span>
                </td>

            </tr>

            <tr>
                <td>密码</td>
                <td class="inputs">
                    <input name="password" type="password" id="password">
                    <br>
                    <span id="password_err" class="err_msg" style="display: none">密码格式有误</span>
                </td>
            </tr>


            <tr>
                <td>手机号</td>
                <td class="inputs"><input name="tel" type="text" id="tel">
                    <br>
                    <span id="tel_err" class="err_msg" style="display: none">手机号格式有误</span>
                </td>
            </tr>

        </table>

        <div class="buttons">
            <input value="注 册" type="submit" id="reg_btn">
        </div>
        <br class="clear">
    </form>
</div>

<script>
    //1.验证用户名是否符合规则
    //1.1获取用户名的输入框
    let usernameInput = document.getElementById("username");

    //1.2.绑定onblur事件 失去焦点
    usernameInput.onblur = checkUsername;

    function checkUsername() {
        //1.3 获取用户输入的用户名
        let username = usernameInput.value.trim();

        //1.4 判断用户名是否符合规则：长度6-12位,单词字符组成
        var reg = /^\w{6,12}$/;
        let flag = reg.test(username);

        if (flag) {
            //符合规则
            document.getElementById("username_err").style.display = 'none';
        } else {
            //不符合规则
            document.getElementById("username_err").style.display = '';
        }
        return flag;
    }

    //1.验证密码是否符合规则
    //1.1获取密码的输入框
    let passwordInput = document.getElementById("password");

    //1.2.绑定onblur事件 失去焦点
    passwordInput.onblur = checkPassword;

    function checkPassword() {
        //1.3 获取用户输入的密码
        let password = passwordInput.value.trim();

        //1.4 判断密码是否符合规则：长度6-12位
        c
        if (flag) {
            //符合规则
            document.getElementById("password_err").style.display = 'none';
        } else {
            //不符合规则
            document.getElementById("password_err").style.display = '';
        }
        return flag;
    }

    //1.验证手机号是否符合规则
    //1.1获取手机号的输入框
    let telInput = document.getElementById("tel");

    //1.2.绑定onblur事件 失去焦点
    telInput.onblur = checkTel;

    function checkTel() {
        //1.3 获取用户输入的手机号
        let tel = telInput.value.trim();

        //1.4 判断手机号是否符合规则：长度11位,数字组成，第一位是1
        var reg = /^[1]\d{10}$/
        let flag = reg.test(tel);

        if (flag) {
            //符合规则
            document.getElementById("tel_err").style.display = 'none';
        } else {
            //不符合规则
            document.getElementById("tel_err").style.display = '';
        }
        return flag;
    }


    //1.获取表单对象
    let regForm = document.getElementById("reg-form");

    //2.绑定onsubmit事件
    regForm.onsubmit = function () {
        // 挨个判断每一个表单项是否都符合要求，如果有一个不符合，则返回false
        let flag = checkUsername() && checkPassword() && checkTel;
        return flag;
    }


</script>


</body>
</html>